Lazzi (/ˈlɑːtsi/; from the Italian lazzo, a joke or witticism) are stock comedic routines that are associated with commedia dell'arte. Performers, especially those playing the masked Arlecchino, had many examples of this in their repertoire, and would use improvisatory skills to weave them into the plot of dozens of different commedia scenarios. These largely physical sequences could be improvised or preplanned within the performance and were often used to enliven the audience when a scene was dragging, to cover a dropped line or cue, or to delight an expectant audience with the troupe's specialized lazzi.
Lazzi could be completed by a single player (e.g. the Lazzo of the School of Humanity wherein a Zanni character would announce that his sister was running a "school of humanity" from their home because she was a prostitute), a few individuals (e.g. the Lazzo of the Straw wherein a stock character of higher status would pour wine as his servant emptied it through a straw), or the entire troupe (e.g. the Lazzo of Nightfall wherein the entire troupe would stumble onto stage to enact hapless physical sequences as though the room was pitch black). While its placement in the plot was usually fixed during rehearsals, it was acceptable for an actor to unexpectedly utter a predetermined line of dialogue that instructed fellow performers to enact lazzi at any time during the performance. Sometimes lazzi could take place in dances or songs accompanied by onstage stringed musical instruments.
